Filter-press device



. G. F. MILLER.

FILTER PRESS DEVICE.

APPuc/mon F|LED1UNE1.19|9.

Patented Mar. 16,1920.

3 SHEETS-SHEET l.

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G. F. MILLER.

FILTER PRESS DEVICE.

APPLICATION FILED JUNE 1. 1919.

-1 ,333 ,869. Patented Mar. 16,1920.

3 SHEETS-SHEET 2.

' fron/vir G. F. MILLER.

FILTER PRESS DEVICE.

APPLICATION FILED JUNE I, 1919.

lPatented Mar.16,1920.

3 SHEETS-SHEET 3.

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INVEVTOH L X MW manner Geenen F. MILLER, or NEW YORK, N. Y.

FILTER-PRESS DEVICE.

Specification of Letters Patent.

Patented Mar. 16, 1920.

Application filed .Tune 7, 1919. Serial No. 302,382.

To all whom t may concern.'

Be it knoivn that l, Grenen F. Minnen, a citizen of the TJnit-ed States, residing in the cityof New York, county of New York, borough ofiManhattan, and State of New York, have invented certain new and useful Improvements in FilteihPress Devices, of which the following is a full, clear. and exact specification.

My invention relates to filter press devices and refers particularly to filtei` press frames.

One object of niy invention is a filter press frame having a removable filter cloth support.

Another object of my invention is a filter press frame capable of carrying a filter cloth which can be removed from the frame by means of 'an abutting expansible membei'. a

'Another object of my invention is a filter press frame carrying means for the effective removal of a filter cloth and its filtered contents therefrom.

Another object of my invention is a filter press frame so constructed that a filter cloth may be employed therewith Without danger of interfering With the flow of liquid through the feed conduits.

Another object of my invention is a filter press frame of such construction that the treated material cannot get behind the filter cloth and thus escape unfiltered.

The above and other objects of my invention Will be evident upon a consideration of the accompanying drawings, specification and claims. l

The ordinary lter press comprises a series of alternate abutting filter press plates and filter press frames with filter cloth interposed. A series of chambers is thus formed, each inclosed by the four sides of' a frame and the filter cloth abutting upon the adjacent plates. The material to be filtered is forced into this frame chamber, the liquid passing outwardly through the filter cloth and the solid, or filtered, material remaining Within the chamber. After the ltering and subsequent ivashing operations are completed it is necessary to remove the material from the cloth and to Wash the cloth for the next operation, or replace it With another cloth.

Each frame and plate has a* pluralityof conduits in its sidefraine in alinement With similar conduits in the abutting membersfor the purpose of the introduction of the materia. to be filtered and of Wash Water.

The usual method of assembling the frame and the cloth, is to have a filter cloth practically tivice the size of the frame. The cloth is thrown over the top of the frame so that it Will hang upon both sides of the frame. lt is therefore necessary that the cloth have holes corresponding to the conduits in the frame and these cloth" holes must fit exactly around each conduit, as otherwise the cloth would extend partly, or Wholly, across the conduit, thus interfering with the free fioiv of the liquid, and in addition to the above mentioned difhculty, there is a possibility that the material to be filtered will lbe forced behind the cloth, thus contaminating the filtrate and causing a'loss of the solid matter. y

lt is evident, therefore, that the greatest care must be exercised in arranging the cloth.

When the filtering process is completed, it is necessary to remove the filtered material. This is usually accomplished by separating the plates and frames, removiiw one side of the cloth and digging out the filtered material by means of a suitable instrument and thenl removing the cloth from the frame.

This process requires considerable manual laborl and expenditure of time and results in a loss of material.

The device of my invention overcomes all of the above described difficulties and pre sents a means whereby the filter cloth may be readily and rapidly applied to the frame, prevents all possibility of interfering with the flow of liquid through the conduits, pre

`vents the material from being forced back of: the cloth, reduces the time and labor of emptying` the frame and prevents loss of material.

ln the accompanying drawings, illustrating modifications of the device of my invention, similar parts lare designated by similar numerals.

Figure l is a vertical cross-section of tvvo of my devices assembled with an expansible member in expanded position.

AFig. 2 is a. plan View of a filter press frame of my invention.

Fig. 3 is a section through the line 33 with clothretainer removed.

Fig. 4 is a section through the line H of Fig. 2. i

Fig. is a top plan view of cloth retaining member with cloth. i

o is a horizontal section oi' the modliication ofV the 'frame as shown in Fig. 'l'.

l'ig. 7 is a vertical section or two modied Yforms o# my devices assembled with an eX- pansible member in non-expanded position.

8 is a development oit the cloth shown in Fig. 1.

Fig. 9 is a development orf the cloth shown in Fig. 7.

lhe particular lilter press frame, shown in Figs. 1 to and Fig. 8, of the accompanying drawings, comprises the side members 10 and 11, the top member 12 and the bottom member 18, maintained in position by the stay bars 1li, 1li, within a ,tace oi' each of the side members 1Gand 11. There is a recess l5 to receive the filter clotl 'lllithin each side member'lO and 11 are two recesses and 17 to receive the iilter cloth supporting members. conduit 18 iiorthe passage of the material to be filtered is connected to the interior of the frame by the conduit 10. A conduit 2O extends through the side member for the passage ,of wash water. r

The cloth supporting a member 21 capable of placement between the end members 10 and 11, and having the extended end members 22, 22 capable of placement within the recesses 16, 16. Ther is a similar member 23, havingl extended endV members 24;, 24:, capable .of placement within the recesses 17, 17. A lilter cloth v25 Fig. 8) is capable of being placed over the supportingmember 21, one portion being passed beneath the member 23, so that when the extended ends 22 andL 24, are placed within the recesses 16, 16, 17, 17, one side of the lter cloth 25 will repose within the recesses 15, The cloth 25 tnus forms a chamber. or bag, into which the material may be introduced through the conduits 18 and 19, lt will thus be seen that the cloth and its contents may be removed Jr'rom within the frame simply by moving the cloth member comprises ksupportinfg members 21 and outwardly.

One method of accomplishing this is shown in Figs. 1, 3 and 7. The expansible plate, thus shown, comprises the side members and 31, the top member 32 and the bottom member 38. TWithin these members are two expansible members vcomposed of a series or' plates 84, 34, 84, 35, 35, 35. The extended ends 36., 36 oli each plate 3e 1forms recesses?, 37, and the extended ends 38, 38 of each plate 35 forms recesses 39, 39. A series of revoluble shafts 40, l0, -lO extend between, and are supported by, and revoluble within, the side members 3() and 81, the lower shai't Ll() extending through the side 31 and being capable'o'l revolution from the vexterior of the device. Fixedly attached to each shaft 40 is an arm 4:1, one extremity of position shown in Fig. 1.

lessees each arm Ll1 being pivotally attached at 42 to the slidable membersv s3, 43, 43 and the other extremity ot each arm '-ll being pivotally attachedat Ll-l to the slidable members i5, 45, 15. Each member 43 is slidable within the recesses 39, 39 and each member l5 is slidable within the recesses 3'?, 37.

Fig. 7 shows the eipansilfle device in its uneXpanded position, which is the position during the liltering process. VJhen the illtering operation is completed, the lower shaft Ll0 is revolif'ed which causes the slidable members i3 and to move upwardly and downwardly, at the same time moving outvardly forcing the two series of plates to more outwardly trom ach other, into the This outward movement oi5 the members forces the filter clothy su'iporting" members, with the cloth and its contents, to also move outwardly from its retained position within the frame and this movement may be great enough to cause the cloth and its contents to fall into a suitable receptacle.

A modication of my device is shown in Figs. 6, 7 and 9. ln this vform of my device both faces of the side members 10 and 11 have recesses 15, 15, and the filter cloth (Fig. 9) is passed over the upper cloth supporting member 51 and fits within therecesses 15, 15 upon both sides of the end members 10 and 11.

I do not limit myself to the particular size, shape, number or arrangement of parts, as shown and described, all of which may be varied without going beyond the scope of my invention as shown, described and claimed.

What l claim is:-

1. ina filter press frame, in combination, a frame, recesses within the rrame, a clothca-rrying member capable of removable insertion within the recesses and recesses within the face o't the frame capable of receiving a cloth carried by the cloth-carrying member.

2. In filter press-frame, in combination, a frame, recesses in the upper and lower portions of the frame and cloth-carrying members capable of removable insertion in ythe upper and lower recesses.

3. ln a lilter press frame, 1n combination, a. ira-me, recesses in the upper and lower portions of the frame, cloth-carrying members, capable oi removable insertion in the upper and lower recesses and recesses upon the tace oil" the frame capable of receiving a cloth carried by the cloth-carrying members.

el. In a {ilter press trame, in combination, a frame, a removable cloth-carrying member and a feed conduit leading to the inner face of the frame.

5. In a filter press frame, in combination, frame, recesses within thel frame, a clothcarrying member capable of removable insertion within the recesses and a feed conduit leading to the inner face of the frame.

6. In a filter press frame, in combination, a frame, a removable cloth-carrying` member, recesses within the face of the frame capable of' receiving a cloth carried by the cloth-carying member and a feed conduit leading to the inner face of the frame.

7. In a filter press frame, in combination,

a frame, recesses within the frame, a cloth-l carrying member capable of removable in sertion within the recesses, recesses within the face of the frame capable of receiving a cloth carried by the cloth-carrying` member and a feed conduit leading to the inner face of the frame.

8. In a lter press frame, in combination,

a frame, recesses in the upper and lower portions of the frame, cloth-carry1n members capable of' removable insertion in the upper and lower recesses and a feed conduit leading to the inner face of the frame.

9. In a filter press frame, in combination, a frame, recesses in the upper and lower portions of the frame, cloth-carrying members capable of removable insertion in the upper and lower recesses, recesses upon the face of the frame capable of receiving a cloth carried by the cloth-carrying members and a feed conduit leading to the inner face of the frame. y

Signed at New York city in the county of New York and State of New York this 2nd day of June, 1919.

GEORGE F. MILLER. 

